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3731 Neptune Ave Duplex
B- Composite 66.77
Why this score? — see what drove the B- grade

The composite is a weighted blend of 9 inputs, each scored 0–100. Each bar is that input's sub-score; the figure is the points it added to the 100-point composite (weight × sub-score).

  • Cash flow +23.4/30.0
  • DSCR +7.5/10.0
  • ARV discount +7.5/15.0
  • Appreciation +7.5/10.0
  • 1% rule +5.3/10.0
  • Schools +5.0/10.0
  • Rent growth +4.3/5.0
  • Livability +3.8/5.0
  • Condition / age +2.5/5.0

$959,000

3731 Neptune Ave · New York, NY 11224
6 bd · 3.0 ba · 2,996 sqft · MultiFamily public records · 332 Days on market
Built 1925 3,000 sqft lot

🖨 Deal sheet 📄 Offer letter ✓ Due diligence

Multi-family units

County records classify this as Multi-Family (2-4 Unit). Listing-text estimate: 2 units. confirmed

Listing remarks

2 family in the private community of Seagate! This house boasts 6 rooms over 6 rooms with a finished basement. Shared driveway, with 1 private parking spot in the back, nice sized back yard. The house needs updating with potential to be your dream home in a private community. New windows on the first floor, roof is 10 years old, the hot water tank is 1 years old, the boiler is 11 years old. Seagate community has its own security department and fire department. The house is conveniently located near all transportation, a short distance to beach and house of worship. Will be Delivered Vacant!

Key facts

  • Back yard
  • Finished basement
  • Private parking spot

Tags

FINISHED BASEMENTPRIVATE PARKING SPOTBACK YARDNEW WINDOWSSHORT DISTANCE TO BEACH

Property features AI

Finance

  • Other: Two-unit multi-family (2 units); Building footprint approximately 987 sq ft; Zoning: R3-1
  • Financial info: Financing considered: bank mortgage, cash, or exchange

Exterior

  • Parking: Shared driveway with one parking space
  • Utilities: Electric service: circuit breakers; Hot water: gas; Heating fuel: gas
  • Home design: Detached building; Residential property; Flat roof; Two-story (units on first and second floors); Building dimensions approximately 47.00 x 21.00
  • Construction: Brick construction; Other foundation
  • Exterior features: Front yard; Back yard; Fully fenced yard

Interior

  • Kitchen: No kitchen appliance details provided
  • Bedrooms: Two 3-bedroom units (one on first floor, one on second floor)
  • Flooring: Hardwood floors
  • Bathrooms: Three full bathrooms total (one full bath in Unit 1, one full bath in Unit 2, plus additional full bath)
  • Heating & cooling: Gas hot water; Gas heating with baseboard heat; Circuit breaker electric service
  • Interior features: Finished basement; Front and back porches
  • Laundry & utility: Laundry area

Neighborhood map

Property Rental comp Retail Transit Schools Stadiums Fortune 500 · Circle radius: 3.0 mi
Loading POIs…

What this means for you Summary

Snapshot

  • This is a 2 × 3-bed/1.5-bath units multifamily listed at $959k.

Deal economics

  • At list price, monthly cash flow is $1k ($16k/yr) — positive. Per door: $677/mo.
  • The deal already cash-flows at list — no discount required.
  • Meets the 1% rule at list price ($10k rent vs $959k).
  • Recommended offer: $844k (12.0% below list) — sets the bar for market timing.
  • Cap rate 8.5% vs local median 2.6% in New York — top-decile yield for the area; either an underpriced asset or a hidden risk that comps aren't pricing in. Stress-test before assuming the spread holds.

Location & tenants

  • Location reads 75/100 on livability (#268 in NY, #4,188 nationally) — a middle-class / working-renter tenant base. Strengths: amenities A+, commute A+, health & safety A; Watch: crime F, cost of living F.
  • Market conditions: Rents rising fast (+7.0%/yr); 114 active listings in the ZIP; lower-income renter base — watch delinquency; 10,063 units permitted in Kings County in 2024 (9,789 in 5+ unit buildings).
  • At $9,861/mo this rent would consume 271% of the median local household income ($44k/yr) (locally 4426% of renters already pay >50% of income on rent) — very limited rent-growth headroom before tenants either downsize or default.

Forward outlook

  • In year one you build about $54k of equity ($7k loan paydown + $48k appreciation (5.0% local appreciation)).
  • Kings County population projected at +13% by 2050 — modest demand growth; plan on rents tracking national, not racing it.
  • At projected returns (5.0% appreciation + 7.0% rent growth), your $269k cash investment doubles in ~4 years — after that, you're playing with house money.
  • By year 2, paydown + projected appreciation supports a ~$87k cash-out refi (75% LTV) — recoverable capital for the next deal without selling this one.

Negotiation context

  • It's been on market 332 days — a 12% lower offer ($844k) is reasonable based on typical stale-listing flexibility.
  • Current owner paid $76k; list at $959k implies a 1162% gain — meaningful room to come down on a strong offer.

Risks & watch-outs

  • Watch-outs: flood insurance adds $427/mo; built in 1925 — expect roof / HVAC / electrical / plumbing capex.
  • Climate carrying-cost: in FEMA flood zone AE (mandatory federal flood insurance); major wind risk, 72% chance of damaging wind over 30y; extreme-heat days projected 7→16/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $843,920 (12.0% below list)

Questions for the listing agent

  1. It's been on market 332 days. Have you received any prior offers? Is the seller open to a 12% concession, seller financing, or rate buy-down credit?
  2. Can we see the unit-by-unit rent roll, current vacancy, and any below-market leases? What's the average tenancy length?
  3. What capital expenditures (roof, boiler, parking lot, exteriors) have been made in the last 5 years, and what's planned in the next 2?
  4. Built in 1925 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
  5. What's the actual annual flood-insurance premium (NFIP or private), and is the property in a SFHA with mandatory coverage?
  6. Why hasn't it sold? Are there any deal-killer items the seller is aware of (foundation, flood, title, zoning, code violations)?
  7. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  8. Schools are B-rated — typically a magnet for longer-tenancy family renters. What's the average tenant stay here, and is there a school-zone premium baked into asking?
  9. Crime grade is F in this area — have there been break-ins, vandalism, or insurance claims at this property in the last 3 years? What carrier currently insures it and at what premium?
  10. What's the average days-on-market for RENTAL listings here right now (not sales)? A rising rental-DOM trend means longer vacancies and softer asking-rent achievability than the comps imply.
  11. What's the recent tenant-quality profile in this submarket — average credit score on applications, eviction rate, late-payment / NSF rate, and stable-employment percentage? A property-management company in the area should have these aggregated.
  12. How much new apartment / multifamily construction is in the pipeline within 1–3 miles? Heavy new supply (>2% of stock underway) typically softens rents 12–24 months out; light construction supports rent growth.

Investment metrics

1% rule
1.03%
Cap rate
8.52%
Cash-on-cash
7.96%
DSCR
1.35
GRM
8.1

CMA / ARV

No comps found within radius.

Projected returns pro-forma

4.98% appreciation · 7.03% rent growth · sell at horizon

5-year hold
IRR
20.1%
Equity multiple
2.30×
Total profit
$347,961
Equity at exit
$542,404
10-year hold
IRR
21.7%
Equity multiple
5.00×
Total profit
$1,074,005
Equity at exit
$935,250

Cash invested: $268,520 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (CITY)
0 Strongly Tenant-Friendly
State New York
15 Strongly Tenant-Friendly · D+10
County
— inherits STATE
City New York
0 Strongly Tenant-Friendly · D+34
Rent Stabilization Code; HSTPA; 6+ months in housing court.

ZIP-level market 11224

Home prices YoY
1.0%
Rents YoY
7.0%
Active inventory
114
Price-to-rent
16.2×

Monthly cashflow live

Estimated rent
$9,861 high interval (Pro) →
Mortgage (P&I)
$5,029
Tax from tax record
$580 /mo · $6,964/yr
Insurance
$400
Flood insurance flood zone
−$427 /mo · $5,118/yr
HOA
$0
Vacancy / Maint / Mgmt
$2,071
Net cashflow
$1,355

Break-even live

Break-even rent $8,146
Max offer price $959,000
Occupancy floor 81%

2-unit breakdown (identical units grouped — click to expand)

UnitsBedsBathsEst. rent
Total (2 units) $9,861

UW: 25.0% down · 7.5% · 30yr · 1.5% tax · 5.0% vac · 8.0% maint · 8.0% mgmt

Financing live

Cash to close

Down payment
$239,750
Closing costs
$28,770
Reserves months
Total cash needed

Loan-product check · same deal, 3 products live

Conventional

25% down · 7.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Personal DTI + credit; lowest rate.

DSCR

20% down · 8.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

No personal income docs; deal must DSCR.

Hard money

10% down · 12.0% · 12mo

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Short-term bridge; refi at stabilization.

Listing history 14 events

  1. 2026-06-18
    days on market $959,000 Active 332 DOM
  2. 2026-06-17
    days on market $959,000 Active 331 DOM
  3. 2026-06-15
    days on market $959,000 Active 329 DOM
  4. 2026-06-13
    days on market $959,000 Active 327 DOM
  5. 2026-06-10
    days on market $959,000 Active 323 DOM
  6. 2026-06-08
    days on market $959,000 Active 322 DOM
  7. 2026-06-03
    days on market $959,000 Active 317 DOM
  8. 2026-06-01
    days on market $959,000 Active 315 DOM
  9. 2026-05-31
    days on market $959,000 Active 314 DOM
  10. 2025-11-25
    price $959,000
  11. 2025-09-29
    price $999,000
  12. 2025-07-21
    listed $1,100,000 Active
  13. 1984-08-01
    soldstatus $76,000
  14. 1984-08-01
    soldstatus $76,000

ⓘ Source: listings_history table (triggers on properties + properties_extension) + one-shot backfill from property_details.listing_events for pre-trigger history.

Tax reassessment forecast NY · Partial reset (capped growth)

Current annual tax
$6,964 · $580/mo
Projected year-2 tax
$11,586 · $965/mo
Expected delta
+$4,621/yr (+$385/mo · 66.4%)

ⓘ Screening estimate from a state-policy table — verify with the county assessor before closing.

Climate risk First Street

  • 🌊 Flood 8/10 Severe FEMA zone AE · 99% chance over 30 yrs
  • 🔥 Wildfire 1/10 Low
  • 🌡 Heat 7/10 Severe 7 d/yr ≥97°F today · 16 d/yr by 30 yrs out
  • 💨 Wind 6/10 Major 72% chance of damaging wind over 30 yrs
  • 🫁 Air quality 4/10 Moderate 5 unhealthy d/yr today · 7 by 30 yrs out

Nearby sold comps map

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Walkable amenities ~0.75 mi

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Taxation est. · year 1

Rental income
$118,332
− Mortgage interest
−$53,719
− Property taxes
−$6,964
− Insurance
−$9,914
− Repairs & maintenance
−$9,467
− Management
−$9,467
− Depreciation
−$27,898
Taxable income
$904
combined federal + state — saved on this device
Est. tax owed @ 24.0%
−$217
After-tax cash flow
$16,038/yr

For passive investors: Depreciation is non-cash, so a rental often shows a tax loss while cash-flowing — sheltering income. Rental losses are passive: they offset passive income freely, and up to $25,000/yr can offset ordinary (W-2) income if you actively participate and your MAGI is under $100k (phasing out to $0 by $150k); unused losses carry forward. On sale, claimed depreciation is recaptured at up to 25%, and gains may owe capital-gains tax (a 1031 exchange can defer both). Figures are a year-1 estimate at your 24.0% rate — not tax advice; consult a CPA.

Schools (NCES district)

No district data.

Livability — New York

Score
75/100
State rank
#268
US rank
#4188

Category grades

Amenities A+ Commute A+ Cost of living F Crime F Employment A- Housing C+ Health & safety A User ratings A

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
New York, NY
County
Kings County · 2,614,986 people
City population
7,731,280
Metro
New York-Newark-Jersey City, NY-NJ-PA
Population (ZIP)
50,822
Household income
$43,648
Rent vs Own
72.7% rent · 27.3% own
Severe rent burden
4426.0

Population outlook (Kings County) Hauer SSP2

Today (2025)
2,847,441 people
By 2030
2,937,006 · +3.1%
By 2040
3,095,491 · +8.7%
By 2050
3,228,968 · +13.4%
By 2075
3,321,723 · +16.7%
By 2100
3,111,387 · +9.3%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Diverse neighborhood (Simpson 0.68)
Race & ethnicity
White 48% Black 22% Hispanic / Latino 19% Asian 8% Two or more races 7%
Hispanic origin (detail)
Mexican 5% Puerto Rican 8% Dominican 2%
Common ancestry
Scotch-Irish 10% Subsaharan African 7% Romanian 1%
Foreign-born
48% · Canada, China
Languages at home
42% English-only · Russian/Polish/Slavic 32% Spanish 11% Chinese 5%

Political lean MEDSL · Kings

2024 margin
Solid D (+44.0) · D 72.0% · R 28.0%
2008→2024 swing
-15.5pp toward R · 2008: 59.4pp · 2024: 44.0pp
All cycles
2024: D+44.0 2020: D+54.8 2016: D+61.8 2012: D+63.9 2008: D+59.4

Not yet ingested

Civics

Market trends

HPI YoY
▲ 4.98%
Current HPI
505.1405
Rent YoY
▲ 7.03%
Metro
New York-Newark-Jersey City, NY-NJ-PA
State GDP YoY
▲ 2.60%
F500 in state
92

Industry mix (Fortune 500 HQ in NY)

Industry F500 HQs Revenue

Price history

+1161.8% since first listed
5 events — show timeline
  • 2025-11-25 Price Changed $959,000 BNYMLS
  • 2025-09-29 Price Changed $999,000 BNYMLS
  • 2025-07-21 Listed $1,100,000 BNYMLS
  • 1984-08-01 Sold (Public Records) $76,000 Public Records
  • 1984-08-01 Sold (Public Records) $76,000 Public Records

Property tax history

+12.9%/yr

Latest (2025): $6,964 · +3.6% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

Loading sold comps…